What is flame retardant
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What is flame retardant

As the name suggests, flame retardants are used to prevent materials from being ignited and to inhibit the spread of fire. They are mainly designed for flame retardant polymer materials. Generally speaking, flame retardants mainly play the role of heat absorption, covering, chain inhibition and asphyxiation of non-combustible gases to achieve flame retardant effects. The material processed with flame retardant can effectively prevent and delay the spread of flame when it is attacked by external fire sources.

Flame retardants are divided into two categories: organic flame retardants and inorganic flame retardants. Among them, organic flame retardants include organic phosphorus flame retardants and organic halogen flame retardants, and representative products of organic halogen flame retardants It is an organic bromine flame retardant; inorganic flame retardants are mainly various metal oxides. The classification of flame retardant products is shown in the figure below:

Flame retardant classification

The three major categories of organic halogen, organic phosphorus and inorganic flame retardants have great differences in performance, flame retardant efficiency and environmental protection, and their application fields are also different. The specific differences of the three types of flame retardants are shown in the following table:


Various flame retardant properties

Compared with organic halogen flame retardants, organophosphorus flame retardants are characterized by low toxicity, less smoke, low corrosion, good compatibility with materials, and dual functions of flame retardancy and plasticization. In developed countries and regions such as Europe, the United States and China, the market share of organic phosphorus flame retardants is gradually expanding, and there is a clear trend to replace organic halogen flame retardants. In China, the development of organophosphorus flame retardants started late and the market prospects are broad.

In the field of polyurethane materials, polyurethane soft foam flame retardants are mostly used in daily life, including sofas, carpets, cushions, etc., downstream customers are more dispersed; polyurethane rigid foam flame retardants are widely used in industrial fields, such as building insulation materials , Refrigerators, pipe insulation materials, etc., customers are concentrated in Europe and the United States; the main application areas of polyurethane thermoplastic elastomer flame retardants are transportation, civil engineering, footwear, fabrics and other materials.

Engineering plastic flame retardants are mainly used to make polycarbonate, nylon, polyester and other materials. Among them, carbonate materials are widely used in televisions, computers, and mobile phones.

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